Operation control unit for electronic computers



FIG. 1 is a top, front and right side perspective view of an operation control unit for electronic computers showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof the left side being a mirror image;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a sectional view thereof taken along the line 7--7 in FIG. 2 with the internal mechanism being omitted; and,

FIG. 8 is a sectional view thereof taken along the line 8--8 in FIG. 2 with the internal mechanism being omitted. 

The ornamental design for an operation control unit for electronic computers, as shown and described. 